<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>购物车</title>

    <%--
        静态包含 base标签,js文件,css样式
    --%>
    <%@include file="/pages/common/head.jsp" %>
    <script type="text/javascript">
        $(function () {

            // 给数量输入框绑定内容改变事件
            $("input.updateCount").change(function () {
                // 获取要修改数量的商品名称
                var name = $(this).parent().parent().find("td:first").text();
                // 在事件响应的function函数中,有一个this对象.这个this对象是当前正在响应事件的dom对象
                var newCount = this.value;
                // 商品编号
                var cartitemId = $(this).attr("cartitemId");

                if (confirm("你确定要修改 *" + name + "* 的数量为 :  " + newCount + " 吗?")) {
                    // 确定
                    location.href = "http://localhost:8080/book/cartServlet?action=updateCount&id="
                        + cartitemId + "&count=" + newCount;
                } else {
                    // 取消
                    this.value = this.defaultValue;
                }
            });


            // 给删除的a标签绑定单击事件
            $("a.deleteItem").click(function () {
                var name = $(this).parent().parent().find("td:first").text();
                return confirm("你确定要删除 " + name + " 吗? ");
            });
            // 清空购物车提示
            $("#clearCart").click(function () {
                return confirm("你确定要清空购物车吗?");
            });
        });
    </script>

</head>
<body>

<div id="header">
    <img class="logo_img" alt="" src="static/img/logo.gif">
    <span class="wel_word">购物车</span>

    <%-- 静态包含 登录成功之后的菜单  --%>
    <%@ include file="/pages/common/login_success_menu.jsp" %>


</div>

<div id="main">

    <table>
        <tr>
            <td>商品名称</td>
            <td>数量</td>
            <td>单价</td>
            <td>金额</td>
            <td>操作</td>
        </tr>
        <%--
            非空的情况
        --%>
        <c:if test="${ not empty sessionScope.cart.items }">
            <c:forEach items="${sessionScope.cart.items}" var="entry">
                <tr>
                    <td>${entry.value.name}</td>
                    <td>
                        <input class="updateCount" type="text" style="width: 80px;"
                              cartitemId="${entry.value.id}" value="${entry.value.count}">
                    </td>
                    <td>${entry.value.price}</td>
                    <td>${entry.value.totalPrice}</td>
                    <td><a class="deleteItem"
                            href="cartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
                </tr>
            </c:forEach>
        </c:if>

        <%--
            空的情况
        --%>
        <c:if test="${empty sessionScope.cart.items}">
            <tr>
                <td colspan="5"> <a href="index.jsp">亲,当前购物车为空! 赶快去浏览商品吧!</a> </td>
            </tr>
        </c:if>



    </table>

    <%--
        购物车非空才显示
    --%>
    <c:if test="${ not empty sessionScope.cart.items }">
        <div class="cart_info">
            <span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
            <span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
            <span class="cart_span"><a id="clearCart" href="cartServlet?action=clear">清空购物车</a></span>
            <span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
        </div>
    </c:if>


</div>


<%--
    静态包含页脚内容
--%>
<%@ include file="/pages/common/footer.jsp" %>


</body>
</html>